Neuroprotective and Antioxidant Effects of Riparin I in a Model of Depression Induced by Corticosterone in Female Mice

2021 ◽  
pp. 1-11
Author(s):  
Iris Cristina Maia Oliveira ◽  
Auriana Serra Vasconcelos Mallmann ◽  
Francisco Adelvane de Paula Rodrigues ◽  
Laura Maria Teodorio Vidal ◽  
Iardja Stéfane Lopes Sales ◽  
...  
Keyword(s):  
New Drugs ◽  
Antidepressant Effect ◽  
Therapeutic Drug ◽  
Female Mice ◽  
Potential Source ◽  
Treatment Of Depression ◽  
Animal Model Of Depression ◽  
Strong Candidate ◽  
Antioxidant Mechanisms ◽  
Antioxidant Effects

<b><i>Background:</i></b> Depression is a common, chronic, and often recurrent serious mood disorder. Conventional antidepressants present limitations that stimulate the search for new drugs. Antioxidant and neuroprotective substances are potential antidepressant agents. In this context, riparin I (RIP I) has presented promising results, emerging as a potential source of a new therapeutic drug. In this study, the antidepressant effect of RIP I was evaluated in an animal model of depression induced by corticosterone (CORT). The involvement of neuroprotective and antioxidant mechanisms in the generation of this effect was also assessed. <b><i>Methods:</i></b> Female mice were submitted to CORT for 21 days and treated with RIP I in the last 7 days. Behavioral and neurochemical analyses were performed. <b><i>Results:</i></b> The administration of RIP I reversed the depressive and psychotic-like behavior, as well as the cognitive impairment caused by CORT, in addition to regulating oxidative stress parameters and BDNF levels in depression-related brain areas. <b><i>Conclusion:</i></b> These findings suggest that RIP I can be a strong candidate for drugs in the treatment of depression.

Ketamine Treatment in Depression: A Systematic Review of Clinical Characteristics Predicting Symptom Improvement

2020 ◽  
Vol 20 (15) ◽  
pp. 1398-1414 ◽  
Author(s):  
Darby J.E. Lowe ◽  
Daniel J. Müller ◽  
Tony P. George
Keyword(s):  
Clinical Features ◽  
Clinical Characteristics ◽  
Bipolar Depression ◽  
Antidepressant Effect ◽  
Future Research ◽  
Symptom Improvement ◽  
Randomized Controlled ◽  
Treatment Of Depression ◽  
Future Direction

Ketamine has been shown to be efficacious for the treatment of depression, specifically among individuals who do not respond to first-line treatments. There is still, however, a lack of clarity surrounding the clinical features and response periods across samples that respond to ketamine. This paper systematically reviews published randomized controlled trials that investigate ketamine as an antidepressant intervention in both unipolar and bipolar depression to determine the specific clinical features of the samples across different efficacy periods. Moreover, similarities and differences in clinical characteristics associated with acute versus longer-term drug response are discussed. Similarities across all samples suggest that the population that responds to ketamine’s antidepressant effect has experienced chronic, long-term depression, approaching ketamine treatment as a “last resort”. Moreover, differences between these groups suggest future research to investigate the potential of stronger efficacy towards depression in the context of bipolar disorder compared to major depression, and in participants who undergo antidepressant washout before ketamine administration. From these findings, suggestions for the future direction of ketamine research for depression are formed.

Bioprospecting Cryptogams as Potential Source of Unique Biodynamic Phytochemicals with Diverse Pharmaceutical Applications

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Brahma N. Singh ◽  
Garima Pandey ◽  
Prateeksha ◽  
J. Kumar
Keyword(s):  
Secondary Metabolites ◽  
Higher Plants ◽  
New Drugs ◽  
Terrestrial Plants ◽  
Pharmacological Activities ◽  
Therapeutic Drugs ◽  
Potential Source ◽  
Therapeutic Value ◽  
Wide Range ◽  
Novel Structures

With the advent of green pharmaceuticals, the secondary metabolites derived from plants have provided numerous leads for the development of a wide range of therapeutic drugs; however the discovery of new drugs with novel structures has declined in the past few years. Cryptogams including lichens, bryophytes, and pteridophytes represent a group of small terrestrial plants that remain relatively untouched in the drug discovery process though some have been used as ethnomedicines by various tribes worldwide. Studies of their secondary metabolites are recent but reveal unique secondary metabolites which are not synthesized by higher plants. These compounds can have the potential to develop more potential herbal drugs for prevention and treatment of diseases The present article . deals with the secondary metabolites and pharmacological activities of cryptogams with an objective to bring them forth as potential source of biodynamic compounds of therapeutic value.

Neuroplasticity: A Key Player in the Antidepressant Action of Chinese Herbal Medicine

2021 ◽  
pp. 1-19
Author(s):  
Baomei Xia ◽  
Chang Chen ◽  
Weiwei Tao
Keyword(s):  
Herbal Medicine ◽  
Chinese Herbal Medicine ◽  
Antidepressant Effect ◽  
Glutamatergic System ◽  
Monoamine Neurotransmitters ◽  
Chinese Herbal ◽  
Treatment Of Depression ◽  
Neural Apoptosis ◽  
Treatment Theory ◽  
Antidepressant Action

Traditional Chinese medicine (TCM) is a systematic medicine. It provides alternative strategies for the treatment of depression with its clinical experience, comprehensive diagnosis, and treatment theory. Chinese herbal medicine (CHM) is the major form of TCM prescription, and numerous CHMs have been demonstrated to possess remarkable antidepressant-like properties. A diversity of mechanisms have been implicated in CHM-associated antidepressant property. This paper reviewed the neuroplastic mechanisms underlying the antidepressant actions of CHM, finding that CHM repairs neuroplasticity by improving neurogenesis, neurotrophic factors, synaptic spine morphology, cell signaling, glutamatergic system, monoamine neurotransmitters, and neural apoptosis. CHM thereby exerts an antidepressant effect, attempting to offer a better understanding of the mechanisms implicated in TCM-related antidepressant-like efficacy and laying a foundation for the scientific evaluation and development of TCM in treating depression.

scholarly journals A study on Antioxidant Properties of Different Extracts from Kitaibelia balansae

Proceedings ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 23
Author(s):  
Zengin ◽  
Aygun ◽  
Aktumsek
Keyword(s):  
Ethyl Acetate ◽  
Human Body ◽  
Antioxidant Properties ◽  
Water Extract ◽  
Antioxidant Ability ◽  
Chemical Methods ◽  
Potential Source ◽  
First Time ◽  
Antioxidant Effects ◽  
Ethyl Acetate Extracts

Nowadays, knowledge of ancient botanical medicinal practices and application of modern phytochemical techniques have provided the excellent tools for the purification and structural elucidation of various phyto-compounds, which, in turn, has given insights into their mode of action on the human body. This study has been designed to investigate for the first time the antioxidant effects of the ethyl acetate, methanolic, and water extracts of Kitaibelia balansae. Different chemical methods were performed and the observed abilities depend on the solvent used. The best antioxidant ability was noted in water extract, followed by methanol and ethyl acetate extracts. The highest level of phenolic was also detected in water extract. The present findings suggest that K. balansae can be considered as a potential source of bioactive compounds for novel phytopharmaceuticals development

scholarly journals Ketamine—New Possibilities in the Treatment of Depression: A Narrative Review

Life ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1186
Author(s):  
Mateusz Kowalczyk ◽  
Edward Kowalczyk ◽  
Paweł Kwiatkowski ◽  
Łukasz Łopusiewicz ◽  
Monika Sienkiewicz ◽  
...  
Keyword(s):  
Antidepressant Effect ◽  
Depression Symptoms ◽  
Drug Resistant ◽  
Depression And Anxiety ◽  
Psychoactive Substances ◽  
Worldwide Population ◽  
Treatment Of Depression ◽  
Resistant Depression ◽  
Depressive Episodes ◽  
Rapid Treatment

The SARS-CoV-2 coronavirus epidemic has led to an increase in the number of people with depression. Symptoms related to the mental sphere (mainly depression and anxiety) may be experienced by one third of the worldwide population. This entails the need for the effective and rapid treatment of depressive episodes. An effective drug seems to be s-ketamine, which was accepted in March 2019 by the Food and Drug Administration (FDA) for the treatment of drug-resistant depression. This drug provides a quick antidepressant effect with maximum effectiveness achieved after 24 h. It also appears to reduce the occurrence of suicidal thoughts. However, research into undesirable effects, especially in groups of people susceptible to psychotic episodes or those who use alcohol or psychoactive substances, is necessary.

scholarly journals Targeting the Serine Pathway: A Promising Approach against Tuberculosis?

2019 ◽  
Vol 12 (2) ◽  
pp. 66 ◽  
Author(s):  
Marie Haufroid ◽  
Johan Wouters
Keyword(s):  
Treatment Options ◽  
Infectious Agent ◽  
Selective Inhibition ◽  
Current Treatment ◽  
New Drugs ◽  
Therapeutic Drug ◽  
Regulatory Domains ◽  
Starting Point ◽  
Drug Discovery Program ◽  
Serine Pathway

Tuberculosis is still the leading cause of death by a single infectious agent. Effective chemotherapy has been used and improved since the 1950s, but strains resistant to this therapy and most antibacterial drugs on the market are emerging. Only 10 new drugs are in clinical trials, and two of them have already demonstrated resistance. This paper gives an overview of current treatment options against tuberculosis and points out a promising approach of discovering new effective drugs. The serine production pathway is composed of three enzymes (SerA1, SerC and SerB2), which are considered essential for bacterial growth, and all of them are considered as a therapeutic drug target. Their crystal structure are described and essential regulatory domains pointed out. Sequence alignment with similar enzymes in other host would help to identify key residues to target in order to achieve selective inhibition. Currently, only inhibitors of SerB2 are described in the literature. However, inhibitors of human enzymes are discussed, and could be used as a good starting point for a drug discovery program. The aim of this paper is to give some guidance for the design of new hits for every enzyme in this pathway.

The antidepressant effect of musk in an animal model of depression: a histopathological study

2016 ◽  
Vol 366 (2) ◽  
pp. 271-284 ◽  
Author(s):  
Nasra Naeim Ayuob ◽  
Soad Shaker Ali ◽  
Mansour Suliaman ◽  
Manal Galal Abd El Wahab ◽  
Samra Mansour Ahmed
Keyword(s):  
Animal Model ◽  
Antidepressant Effect ◽  
Histopathological Study ◽  
Animal Model Of Depression

scholarly journals In VitroandIn VivoAntimalarial Activity ofFicus thonningiiBlume (Moraceae) andLophira alataBanks (Ochnaceae), Identified from the Ethnomedicine of the Nigerian Middle Belt

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
M. O. Falade ◽  
D. O. Akinboye ◽  
G. O. Gbotosho ◽  
E. O. Ajaiyeoba ◽  
T. C. Happi ◽  
...  
Keyword(s):  
Antimalarial Activity ◽  
Human Cell Line ◽  
New Drugs ◽  
Leaf Extracts ◽  
Potential Source ◽  
Hexane Extracts ◽  
Ficus Thonningii ◽  
Multiresistant Strains

Drug resistance inPlasmodium falciparumrequires that new drugs must be developed. Plants are a potential source for drug discovery and development. Two plants that used to treat febrile illnesses in Nigeria were tested forin vitroandin vivoantimalarial activity and cytotoxicity in cancer cell lines. Methanol, hexane, and ethyl acetate leaf extracts ofFicus thonningiiandLophira alatawere active inin vitroassays againstP. falciparumNF54 (sensitive) and K1 (multiresistant) strains. Hexane extracts ofF. thonningiiandL. alatawere the most effective extracts inin vitroassays with IC50of2.7±1.6 μg/mL and2.5±0.3 μg/mL for NF54 and10.4±1.6 μg/mL and2.5±2.1 μg/mL for K1 strain. All extracts were nontoxic in cytotoxicity assays against KB human cell line with IC50of over 20 μg/mL, demonstrating selectivity againstP. falciparum.In vivoanalysis shows that hexane extracts of both plants reduced parasitaemia. At the maximum dose tested,L. alatahad a 74.4% reduction of parasitaemia whileF. thonningiihad a reduction of 84.5%, both extracts prolonged animal survival in mice infected withP. bergheiNK65 when compared with vehicle treated controls. The antiplasmodial activity observed justifies the use of both plants in treating febrile conditions.

Inhibitors of Phenylethanolamine N-Methyltransferase and Epinephrine Biosynthesis: A Potential Source of New Drugs

1983 ◽  
Vol 14 (4) ◽  
pp. 709-721 ◽  
Author(s):  
William E. Bondinell ◽  
Frederic W. Chapin ◽  
James S. Frazee ◽  
Gerald R. Girard ◽  
Kenneth G. Holden ◽  
...  
Keyword(s):  
New Drugs ◽  
Potential Source

Tropical Rain Forests: Potential Source of New Drugs?

1989 ◽  
Vol 32 (2) ◽  
pp. 244-256 ◽  
Author(s):  
D. D. Soejarto ◽  
N. R. Farnsworth
Keyword(s):  
New Drugs ◽  
Tropical Rain Forests ◽  
Rain Forests ◽  
Potential Source
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